r/api_management: reverting #22752 temporarily until we're on `hashic…

…orp/go-azure-sdk`

internal/services/apimanagement/api_management_resource.go

@@ -11,6 +11,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/hashicorp/go-azure-helpers/lang/response"
+
 	"github.com/Azure/azure-sdk-for-go/services/apimanagement/mgmt/2021-08-01/apimanagement" // nolint: staticcheck
 	"github.com/hashicorp/go-azure-helpers/lang/pointer"
 	"github.com/hashicorp/go-azure-helpers/resourcemanager/commonids"
@@ -1182,7 +1184,10 @@ func resourceApiManagementServiceDelete(d *pluginsdk.ResourceData, meta interfac
 	}
 
 	if err = future.WaitForCompletionRef(ctx, client.Client); err != nil {
-		return fmt.Errorf("waiting for deletion of %s: %+v", *id, err)
+		// TODO: @tombuildsstuff: this NotFound can be removed once this is switched to `go-azure-sdk`
+		if !response.WasNotFound(future.Response()) {
+			return fmt.Errorf("waiting for deletion of %s: %+v", *id, err)
+		}
 	}
 
 	// Purge the soft deleted Api Management permanently if the feature flag is enabled